Challenge

Week 9 - Attachment Feature Creation - Challenge 2

Week 09 Challenge 02 : Coin Holder with Screw Boss and Dog House

After Rib creation, Screw bosses and Dog houses are created by following the standard design rules.
The Standard Design Rules For Screw Boss,
- Draft angle is 0.5 deg
- Thickness is 0.6*base wall thickness
- Height to Diameter Ratio is 3:1
- Maximum Fillet Radius is 0.25mm
The Standard Design Rules For Dog House,
- Draft angle is 1.5 deg
- Width to Height ratio is 3:1
- Height B should be 3 to 6mm
- C is 40% of Wall thickness
The followings are the result when we follow the design rule for the 2.5mm wall thick component(Coin Holder)
- Screw Boss
  - Boss thickness W=0.6*t Here t=2.5mm so, W=1.5mm
  - Considering the smaller dia hole is 5.2, so the larger dia will be 5.2+2(w) = 8.2mm
  - Height(Y)/Diameter(D)<3, So that Y has taken as 12mm. 12/8.2=1.46 hence statisfied this rule.
  - Draft angle 0.5deg and Fillet radius 0.25mm are maintained in the Screw boss.
- Dog House
  - Width(X)/Height(H)<3, Width=24mm, H has taken as 14mm. 24/14=1.714mm hence statisfied this rule
  - C = 40%*t = 40%*2.5 = 1, C=1mm.
  - Height B has taken as 4mm
  - Draft angle has maintained at 1.5deg.
  - For the inner area of the Dog house we have to consider about the side core. So that the Side core tooling axis has been created along the Zdirection.
  - Draft analysis has been done for by Main tooling axis and Side core tooling axis. The resultant images are attached below.

Resultant Images:

Ship work like this
in your own course.